Hey, I have this idea that is based on a comic that I have found.
THe idea I have is where MC has a huge crush and is infantuated with YC, to the point she gets into YC's home. THat's where she is found. What MC doesn't realise, YC is a serial killer, and makes her prisoner, physically hurting MC, and making MC into a servant, something MC doesn't mind doing because of the love she has for YC.
As time goes on, YC actually starts falling for mine, and a weird relationship forms.